Genuine BMW Vacuum Cap

The Genuine BMW Vacuum Cap (also called a vacuum plug or vacuum port cap) is an original-equipment part. It seals off unused vacuum ports in the engine's intake and vacuum system. A sealed port keeps vacuum pressure from leaking. That pressure can then be used by other systems, such as the brake booster.

Key Features:

• Genuine BMW part made to BMW's design specifications for fit and durability
• Closes off open vacuum ports to help prevent vacuum leaks
• Helps maintain consistent engine vacuum for the intake system and vacuum-operated components
• Simple push-on style replacement for a worn, cracked or missing cap
• Available in several diameters, so you can match the cap to the port it seals

A missing or deteriorated vacuum cap can cause a vacuum leak. Common symptoms include a rough idle, poor performance and a check engine light. Replacing the cap with a Genuine BMW part restores a tight seal and keeps the vacuum system working as designed.